Meaning

certify

  1. (transitive) To attest to (a fact) as the truth.
  2. (transitive) To authenticate or verify in writing.
  3. (transitive) To attest that a product, service, organization, or person has met an official standard.
  4. (archaic, transitive) To inform; to tell (a person) that something is true.
  5. (archaic, reflexive) To assure (oneself) of something; to ascertain.

Frequency

C2

Notes

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